def test_vector_data_lid_iteration():
lc = LineCollection([(0, 1 + 1j)])
vd = VectorData()
vd.add(lc, 1)
for lc in vd.layers_from_ids([1, 2, 3, 4]):
lc.append([3, 3 + 3j])
assert vd.count() == 1
assert len(vd.layers[1]) == 2
def test_line_collection_append(line):
lc = LineCollection()
lc.append(line)
assert len(lc) == 1
assert np.all(lc[0] == np.array([4 + 3j, 5, 10 + 10j, 5j]))